【题目】It is evident that James has made a simple mistake in his job, but don' t scold him too much; he is a green hand.
A. by contrast B. more of C. at random D. at best
在线课程【答案】D
【解析】
考查介词短语辨析。A. by contrast相比之下；B. more of更大程度上的；C. at random任意地； D. at best最多。句意：很明显，James在工作中犯了一个小错误，但不要过于责备他，他充其量就是个新手。故D项正确。